Combination windshield heaterdefroster and washing system



Jan. 30, 1968- F. A NEUSCHWANGER ETAL COMBINATION WlNDSHIELDHEATER-DEFROSTBR AND WASHING SYSTEM Filed March 23, 1965 5 Sheets-Sheet1 INVENTORS FAY A. NEUSCHWANGER JULIAN B-MI'LLER,JR.

ATTORNEY Jan. 30, 1968 F A. NEUSCHWANGER ETAL COMBINATION WINDSHIELDHEATER-DEFROSTER AND WASHING SYSTEM Filed March 25, 1965 3 Sheets-Sheet2 IN VEN r0Rs yfea czvagezfl 4 TT'OR/VEY Jan. 30, 1968 F. A.NEUSCHWANGER ETAL 3,366,336

COMBINATION WINDSHIELD HEATER-DEFROSTER AND WASHING SYSTEM Filed March25, 1 965 5 Sheets-Sheet 5 ATTORNEY United States Patent 3,366,336COMBINATION WINDSHIELD HEATER- DEFROSTER AND WASHING SYSTEM Fay A.Neuschwanger, 1811 Broadway, Chesterton, Ind.

46304, and .l'nlian It. Miller, In, RR. 5, Long Lake, Valparaiso, Ind.46383 Continuation-in-part of application Ser. No. 317,410,

Oct. 21, 1963. This application Mar. 23, 1965, Ser.

4 Claims. (Cl. 239--129) The present application is acontinuation-in-part of our copending application, Ser. No. 317,410filed Oct. 21, 1963, and now abandoned.

This invention relates to an automotive device and more specifically toa novel arrangement either for keeping all of the windows and thewindshield of a vehicle clear of ice, frost and snow or for clearingsaid windows and windshield of ice, frost and snow once it is formedthereon.

Heretofore, motor vehicles have been equipped with windshield wiperblades on the outside of the windshield and with hot air defrosters onthe inside of the windshield. As long as the rain, ice, sleet, snow orthe like hitting the windshield is soft and the wiper blades are pliableand moving, the outside of the windshield can be kept clear. The hot airtype defroster, within limited areas, can reduce the accumulation offrost and ice on the inside of the windshield. Sometimes the defrosterheat is enough to help soften the ice accumulation on the outside of thewindshield so that the blades can move it out of the line of vision.

However, all of the enumerated solutions to the problems vanish when thevehicle is travelling at ordinary highway speed or when the wiper bladesbecome clogged with ice and snow or are too stiff from the cold to wipeeffectively. In addition, on cold days it is possible withoutprecipitation to have mud and salt thrown on the windshield requiringfluid to clear it, but the washer fluid is either frozen in the nozzleor freezes when it hits the windshield so that the blade cannot wipe theglass. Under all these conditions the windshield becomes opaque and thehazards to the vehicle and its occupant become very great.

In addition, the inside and outside of the vehicles side and rearwindows also become coated with ice, snow or frost and particularly oncold days when the vehicle is closed and one or more people are in thevehicle breathing moisture into the air. The moisture condenses andfreezes on the glass surfaces. Snow and ice often form on the windowswhich at present can be cleared only by scraping.

It is a principal object of this invention to overcome the above noteddisadvantages of the existing window and windshield clearing systems andto provide an improved system whereby under practically all operatingconditions of a vehicle the windows and windshield will be kept clearand clean. v

It is another object of this invention to provide a vehicle with animproved window and windshield clearing system whereby the wiper bladesare kept soft and pliable even under extremely cold operatingconditions.

It is still another object of this invention to provide a vehicle withan improved windshield clearing system whereby the windshield washersolution is kept in a fluid condition ready for instant and effectiveuse.

It is a further object of this invention to provide a system wherebyheated air is flooded over the outside of the windows and the windshieldto keep the glass effectively warm for preventing accumulations of ice,snow or the like.

It is still a further object of this invention to provide a system thatcan be readily attached to a vehicle either ice at the factory or in thefield without the need for complicated tools, fittings, modifications orequipment.

It is an object of this invention to provide a system that is relativelyinexpensive to build, simple to install and yet is highly effective andefficient in use.

And a further object of this invention is to provide a device wherebyalmost instant heat is available upon starting the vehicle engine sothat a window or windshield with heavy frozen-on accumulations of iceand snow can be cleared within a few minutes after the heated air startsto flow over said window or windshield.

These and other objects and advantages of the invention will be apparentfrom the following specification when taken with the accompanyingdrawings, in which:

FIGURE 1 is a side elevational view of an internal combustion engine inposition in a motor vehicle showing our invention in operating position;

FIGURE 2 is a cross-sectional view taken on the line 2-2 of FIGURE 1;

FIGURE 3 is a cross-sectional view taken on the line 33 of FIGURE 2;

FIGURE 4 is a cross-sectional view taken on the line 4-4 of FIGURE 1;

FIGURE 5 is a top view of a motor vehicle showing an improvedmodification of our invention in operative position thereon;

FIGURE 6 is a cross-sectional view through our improved heat-exchangertaken on the line 66 of FIG- URE 5 with parts of the mufller broken awayand in section;

FIGURE 7 is a cross-sectional view taken on the line 77 of FIGURE 5;

FIGURE 8 is a cross-sectional view taken on the line 88 of FIGURE 5;

FIGURE 9 is a further modification of the heat-exchanger of ourinvention;

FIGURE 10 is a cross-sectional view taken on the line 10-1 of FIGURE 9;

FIGURE 11 is a sectional view taken through the hinge portion and partof the door of a motor vehicle looking down on the coupling of the ductwork between the frame and the door of a vehicle;

FIGURE 12 is an end view of a door showing one type of rubber seal forthe duct work;

FIGURE 13 is a modified end view of a door and matching frame showingthe coacting parts that form a coupling for the duct work of ourinvention; and

FIGURE 14 is a schematic front view of an engine and windshield of avehicle showing the relative positions of the heat-exchanger and ductwork to the windshield.

Referring to FIGURES 1-4 of the drawings wherein the same referencenumeral refers to the same part throughout the several views, aninternal combustion engine 10 is mounted in an engine compartment 12 ofa motor vehicle having a fire wall 16 and a windshield 18 upwardlyprojecting therefrom.

The engine 10 comprises an engine block 20 having a fan blade 22 mountedon a shaft 24 carrying a pulley 26 engaged by a belt 28 for connectionwith a second pulley 30 mounted on a shaft 32. The engine 10, only oneside of which is shown, is indicated as being a V-type. The side of theengine not shown is identical with what is shown and is conventional.Our improved apparatus is described as being mounted in the enginecompartment for attachment to one side, the other side, or both sides ofthe engine without deviating or digressing from the scope of theinvention.

Extending along the sides of the engine 10 is a manifold housing 34having integrally formed connecting pipes 36 extending from the body 38of said manifold 34 and being connected to the engine block 20 by lugs40 passing through apertures formed in flanges 42 at the base of eachpipe 36. Tapped into a fore part of the manifold body 38 is a threadedaperture 44 into which is screwed a fitting 46 for connecting one end 48of a tube 50 onto the manifold 34. The tube 50 is hollow and extendsaway from the fastened end 48 for a short distance and is then formedinto a coiled portion 52 which ends with another short portion on theother end 54. The end 54 of the tube 50 extends into a fitting 56 whichis screwed into a tapped aperture 59 in the rear end portion 60 of theexhaust manifold 34.

The coiled portion 52 of the tube 50 extends substantially the length ofthe manifold body 38 and is encased in a louvered housing 60 throughoutits length. The housing 60 is supported on the engine by brackets 62 ateach end thereof and has one or more rows of rearwardly opening louvers64 along substantially the full length thereof. In the illustratedembodiment there are three rows of louvers 64, but it is to beunderstood that any reasonable number or size of louvers down the sidesof the housing 60 is within the context of this invention. At the rearportion of the housing 60 is attached a sheet metal piece of piping 66which is shaped to angle around portions of the engine and is connectedto an elongated piece of piping 68 running substantially parallel to thebase of the windshield 18 under the hood or under the cowling of thevehicle. The piping 68 has an upwardly formed tubular outlet 70 at eachend thereof and a forked pair of tubular outlets 72 at the centerportion thereof. The outlets 70 and 72 taper to relatively flatelongated slits 74, 76, respectively, at the outward ends 78, 80thereof. The ends 78, 80 extend up through the cowl or just under thetrim strip at the belt line of the windshield so that the slits 74, 76are pointed toward the base portion of the windshield in close proximitythereto.

Mounted on a bracket 82 carried by the firewall 16 is an electricallydriven motor 84 which has a shaft 86 driving a pulley 88, a belt 90,another pulley 92, a shaft 94 and a suction fan 96 in the rear end ofthe housing 60. The shaft 94 extends through the wall of the piping 66and is supported for rotation in the housing 60 by a spider bracket 98carried by said housing 60. The blades of the fan 96 are constructed soas to pull air through the housing 60 past the coils 52 of the tube 50and forces it through the piping 66 and 68 and out through the slits 74,76 of the outlets 70 and 72 onto the windshield 18. The relative sizesof pulleys 88 and 92 can be varied so as to effectively increase ordecrease the rpm. of the fan 96. It is possible to connect the motorshaft 86 directly to the fan 96 if it is so desired.

With our device as described so far it will be apparent that hot exhaustgases in the manifold 34 will pass into the tube 50 through its coiledportion 52 and back into the manifold 34 for ready ejection from theexhaust system of the vehicle in the usual manner. As the gases passthrough the coiled portion 52 in the housing 60 they will heat the tube50 so that air sucked into the housing by the fan through the louverswill be heated thereby. Said heated air will be forced through thepiping and out onto the windshield to heat said windshield from theoutside. The heated air flooding over the Windshield will not only heatthe windshield to help prevent the formation of ice and frost, but willalso serve to heat the rubber portion of the wiper blades to therebykeep the blades pliable and flexible for wiping any moisture from thewindshield. The heating of the wiper blades prevents the formation ofice within the metal linkages of the blades so as to make it possiblefor the blades to function properly. The heating of the outer surface ofthe windshield will help prevent condensation and frost from forming onthe inside of the windshield thereby further promoting safety on thehighway.

In the event it is desirable to double the amount of heated airavailable for flooding onto the windshield, it is well within thecontext of our invention to have a tube 50 and louvered housing 60 oneach side of the engine with a Y-type piping at the rear end of theengine.

The piping will then connect to the piping 68 and will function in thesame manner as just described. Where the taps are made into the manifold34, and how many taps are used, is an individual choice of the carowner. The form shown in the drawings is for illustration purposes onlyand the invention is not to be construed as limited to that form.

An additional feature of our invention is the inclusion of thewindshield washer apparatus within the heat ducts of our system.Specifically, a windshield washer bottle and actuation mechanism ismounted on the firewall 16 by brackets 112. The washer is actuated in aconventional manner within the vehicle by pressing a button, turning aswitch or pushing a pedal, all as is well known in the art. Extendingfrom the washer bottle is a rubber tube 114 which extends to and passesthrough a sealed opening in the piping 66. The tube 114 extends withinthe piping 66 to a T joint connection 116 in the piping 68 and continuesout each end of the head of the T to the outlets 70 and slits 74. Theends of the tube 114 in the slits 74 are formed into or are connected tospray nozzles 118 projecting toward the surface of the windshield. Fromthis construction it becomes obvious that the windshield washer fluid inthe bottle 110 can be pumped through the heated piping 66 and 68 andejected upon the windshield at the same time the flood of warm air isflowing from the slits 74, 76 whereupon the washer fluid can be wiped bythe blades over the surface of the heated windshield to clear away themud, muck, scum or other obstruction deposited upon the windshield asthe vehicle is driven along the highways in winter.

The heated air and heated washer fluid singly, or together, combine tomake it possible to keep a windshield clear and clean under the Worstpossible driving conditions. No amount of snow, sleet, road dirt or filmat any reasonable speeds will require a driver equipped with ourimproved apparatus to stop due to obstructed vision. The heated airand/or washer fluid on the windshield while driving under all extremesof winter weather conditions will keep the windshield clear for safedriving.

The modification shown in FIGURES 5-8 provides for a vehicle 100 havingan engine 101 with manifolds 102, 103 on opposite sides thereof. Theengine shown is of the V-8 variety, it being understood thatstraight-line engines with only one manifold can be used withoutdeparting from our invention. A body 106 on the vehicle has a windshield107, a pair of front roof support osts 105, front doors 108, 109, acenter column 110, a pair of rear doors 112, 113 and a rear window 114.

A heat exchanger 115 is mounted on each muffler 102, 103 and has ductwork 117 going into blowers 118 with ducts 120, 121 extendingrespectively to the base of the windshield 107 and to a series of ductsaround the body work of the vehicle. The duct work around the vehiclewill be described in detail hereinafter.

The heat exchanger 115 is composed of an outer generally cylindricalshell or housing 123 connected at the front with a plate 124 and at therear with a plate 125. A plurality of hollow tubes 127 extend in sealingrelation between the front plate 124 and rear plate in alignment withapertures 128, 129, respectively, in said plates 124, 125. The housing123 has a pair of slots 131, 132 axially aligned with each other in thearcuately shaped bottom wall 134 of said housing. The heat exchanger 115is adapted to have said arcuate bottom wall 134 seat on the top surfaceof the manifolds 102, 103 with the slots 131, 132 aligned with matingslots 136, 137 formed in said manifolds. A pair of fastening means 138such as straps are wrapped around the manifold and the housing 123 ofthe heat exchanger 115 and are bolted or joined together as at 140 tosecure the heat exchanger on said manifold. A gasket 142 of heatresistant material, having apertures aligned with the slots 131, 136 and139, 137, can be inserted between said heat exchanger and manifold toseal the joint against leaking exhaust gases.

If desired a b-afile 144 can be secured to the front of the exchanger115 and comprises a plate 145 spaced from said front 124 by means of theshaped support 147 extending from the plate 145 to the housing 123. Theplate of the baflie is in direct bafiling relation to the wind currentsattempting to enter the openings 128 in the front of the housing, sothat air entering the heat exchange tubes is mostly drawn in in afashion to be described hereinafter.

With our modified heat exchanger 115 just described in position on amanifold, the hot exhaust gases from the engine enter the manifold andblow up through the slots 136, 131 into the housing 123 of the exchangerand pass around, over and between the tubes 127 and back out through theslots 132, 137 into the exhaust manifold 102 and out the vehicleexhaust. Air passing through the vehicle radiator and into the enginecompartment of the vehicle is pulled over the baffle 145 and into andthrough the tubes 127 in the exchanger. Air designated 150 is heated bythe heat extracted from the hot exhaust gases 127 and out onto thewindshield and onto the windows to heat the same.

FIGURES 9 and show a still further modified form of our inventionwherein a manifold 160 is cast specially to include a regular exhaustgas part 161 and a heat exchange part 162. The manifold 160 is connectedat 164 and 165 to the side of the engine in the usual fashion. Castintegrally with the manifold and on its inside is the corrugated wall167 having laterally spaced convolutions (see FIG. 10) which separatesthe exhaust gases entering the manifold through the parts 164, 165 fromthe heat exchange side 162. As much surface area as is possible isprovided by the corrugations between the exhaust side and the heated airside so as to maximize the extraction of heat from the exhaust gases toraise the air temperature a maximum amount. It will be obvious that theouter shell on body 166 of the manifold 160 could be moulded as onepiece with the corrugated wall 167 being an insert in the mould. As canbe seen in FIG. 9, the exhaust part 161 of the manifold bends down fromthe parts 164, 165 in such a way that the entrances 170 to the airpassages in the heat exchange part 162 are partially baffled against thedirect entrance of air into the passages. On the front of the heatexchange part 162 a wall 172 is formed to seal the exhaust gases in themanifold and yet permit air to be drawn into the opening 170 at thefront of the heat exchanger 162. The air to be heated enters the opening170 in the heat exchange part and passes over the heated wall 167 topick up heat therefrom.

The exhaust gases after passing through the exhaust part 161 of themanifold go out through the exhaust pipe 173 to a regular mufiier and atail pipe, not shown.

The rear portion 175 of the heat exchange part 162 is connected by aduct 176 to a blower 177. The output of the blower 177 is connected to aduct 178 which extends to the base of the windshield.

In this embodiment, the blower 177 draws air into the opening 170 andover the heated corrugated wall 167 soaking up heat along the way. Theheated air is then forced on toward the surfaces to be heated as will bedescribed hereinafter. The exhaust gases from the engine, after givingup heat to the corrugated wall 167 and air in the heat exchanger, passon out through the tail pipe.

The heat exchangers 115 and 162 of the FIGURES 5-10 embodiments arehighly efficient, high volume units capable of extracting relativelylarge amounts of heat from the exhaust gases as they are discharged intothe manifold from the engine.

Referring now to FIGURES 5, 11, 12 and 13, it can be seen that duct work121 extends from the blowers 118 to the front posts 105 of the vehiclewherein the passageway 181 of the duct aligns with an aperture 182 inthe hinge face 183 of the post 105. The end of the duct 121 is welded orthe like to the post as shown in FIG. 11. A rubber washer 185 iscemented to the edge 183 around the aperture 182, which is adapted tosealingly engage with a washer 187 cemented in mating alignment to theedge 188 of the door 109. An aperture 190 communicates with the washer187 and with a tube 191 welded in the door 109. The door 109 is hingedat 193 to the post to permit opening of the door in the usual fashion.The tube or duct 191 is shown as having openings 194 through its topsurface so that hot air from the heat exchanger will be forced out andup over the operating parts of the door and window to defrost the sameand keep the window clear. It is believed to be obvious that the duct191 could be located near the top of the metal part of the door cavityon either the inside, outside or both sides of the glass so as to blowhot air onto the inside, outside or both sides of the glass, as desired.

The duct work 191 continues to the other edge of the door 109 wherein aone half rubber washer 195, FIGURE 13, is secured to the doorconcentrically half way around the opening 196 communicating with theduct 191. A post between doors 109 and 113 has a mating one half rubberwasher 197 surrounding an opening 198 communicating'with the continuingduct work around the vehicle. As the door 109 is pulled shut, the onehalf washer 195 will engage with its mating one half washer 197 toeffect a seal between the door and the duct in the post 110. The sealsand duct work will be repeated between each door and post so that theduct work will continue around each side of the vehicle and up to therear window 114 of the vehicle. The ducts from both sides will terminatein a slot 198 adjacent the rear window 114. The slot 198 can be on theinside, outside or both sides of the rear window and can be connectedrespectively with the ducts of one side, the other side or both sides.

From the above, it will be seen that we provide a device wherein ahighly efficient, high volume heat exchanger (162, 115, 50) is connectedto duct work which projects hot air through openings 200, 201 (72, 74,76) onto the outside of the windshield and also through duct work aroundthe inside of the body of the vehicle and through the doors whereby thehot air is blown over the side windows andrear windows of the vehicle.In this way any ice or frost is removed from the surfaces of the glassand new accumulations of ice, frost or steam on said glass surfaces areprevented. The hot air projected onto the windshield also serves to keepthe wiper blades pliable and free to clear windshield.

The description of FIGURES 1-4 with respect to installing the windshieldwasher system in the duct work to the windshield so as to preventfreezing of the fluid and blocking of the duct work is carried over intoFIG- URES 5-14. That is the modifications of FIGURES 5-14 include thepiping and nozzles of FIGURES 1-4. However, the piping and nozzles havenot been illustrated and described in FIGURES 5-14 so as to keep theshowings as uncluttered as possible.

FIGURE 14 shows a front view of the engine 101 and the windshield 107with the heat exchanger mounted on the manifolds 102, 103. The heatedair from the heat exchange 115 is shown piped to the nozzles 200, 201for projection onto the surface of the windshield.

It is contemplated that the apparatus described will be installed at thefactory when the automobiles are being manufactured. However, to providevehicles already on the road with this apparatus it is contemplated thatthe apparatus will be supplied as a kit which will include in the caseof embodiment of FIGURES 1-4, the coiled tubing, a drill and tap for themanifold openings, the housing and piping, motor, fan and bracket. Inthe embodiment of FIGURES 5-8, the heat exchangers 115, straps, ducts,motors, fans and taps for the holes in the manifold will be supplied ina kit, while the embodiment 7 of FIGURES 9-10 will be supplied as areplacement manifold, ducts, fans and motors. A universal set ofinstructions for installations on all makes and models of automobileswill be supplied to make it possible to readily install the apparatusfor quick and efficient operation.

It is thus readily seen' that we have provided an improved apparatusadapted for use with motor vehicles which provides an efficient systemfor keeping a windshield clear of ice, snow, sleet, mud and otherobstructions to vision, particularly in winter Weather conditions.

It will, of course, be understood that various changes may be made inthe form, details, arrangements and proportions of the parts, withoutdeparting from the scope of the invention, which, generally stated,consists of a device capable of carrying out the objective above setforth, in the parts and combinations of parts disclosed and defined inthe appended claims.

What is claimed is:

1. In a windshield clearing device comprising in combination meansconnected into a manifold for passing heated exhaust gases therethrough,a louvered housing surrounding the major portion of said means, pipingconnected with said housing extending to a plurality of outlets at thebase of a windshield, fan means for moving air through said housing andpast said first named means whereby the temperature of said air israised, said fan means forcing said heated air through said outlets ontothe windshield, flexible tube means connected with a windshield washerbottle, said tube means extending into said piping and passing withinsaid piping to spray nozzles projecting from said outlets of saidpiping, and means for forcing fluid through said flexible tube means andspraying from said nozzles onto the windshield surface whereby saidwindshield can be kept clear of snow, ice and other obstructions tovision.

2. A windshield clearing device comprising conduit means connected intothe front and rear portions of a manifold for passing heated exhaustgases therethro-ugh, a louvered housing carried by an engine andsurrounding a major portion of said conduit means, duct work connectedwith said housing and extending to a plurality of outlets at the outsidebase of a windshield, fan means for moving air through said housing andpast said conduit means whereby the temperature of said air is raised,said fan means forcing said heated air through said outlets onto thewindshield, a windshield washer system carried by said engine, tubemeans for moving fluid from a reservoir onto the windshield surface andextending into said duct work to spray nozzles projecting from saidoutlets of said duct work, and means for forcing washer fluid throughsaid means for spraying from said nozzles onto the windshield surface.

3. In a windshield clearing device comprising in combination meansconnected onto a manifold for passing heated exhaust gases therethrough,means for extracting heat from said first named means and transmittingsaid heat to piping connected with a plurality of outlets at the base ofa windshield, fan means for moving air past said first named meanswhereby the temperature of said air is raised, said fan means forcingsaid heated air through said outlets onto the windshield, flexible tubemeans connected with a windshield washer bottle, said tube means passingwithin said piping and receiving heat from said heated air, said tubemeans being connected to spray nozzles projecting from said outlets ofsaid piping, and pump means for forcing washer fluid through said heatedflexible tube means whereby said fluid can be sprayed from said nozzlesonto the windshield surface.

4. A Windshield clearing device for a vehicle having an internalcombustion engine with an exhaust system comprising heat exchange meanshaving a housing, a corrugated heat transfer wall having laterallyspaced convolutions on the inside of said housing dividing said housinginto at least two chambers, one of said chambers being connected withsaid engine exhaust system, the other of said chambers being open at oneend to the atmosphere, conduit means connected to the other end of saidother of said chambers and extending to outlet means adjacent a vehiclewindshield for conducting air heated in said heat exchange means to theoutside of said windshield, fan means positioned in said conduit meansfor drawing said heated air from said other chamber of the heat exchangemeans through said conduit means and unto said windshield, a windshieldwasher system associated with said vehicle, tube means for conductingwasher fluid from a reservoir into and through a portion of said conduitmeans to discharge nozzles adjacent the base of said windshield andwithin the confines of said conduit outlet means, and means for forcingwasher fluid through said tube means for discharging said fluid fromsaid nozzles onto the windshield surface.

References Cited UNITED STATES PATENTS 1,790,419 1/1931 Heinemann et al.239284 1,827,998 10/1931 Otwell 237-12.3 1,853,585 4/1932 Sutter 512,087,617 7/1937 Francisco 165139 2,240,013 4/1941 Gale 239284 2,260,90410/1941 Horton 239284 2,719,339 10/1955 Clem 239284 2,835,533 5/1958Baker 239129 2,594,437 4/ 1952 Horton 239284 M. H'ENSON WOOD, JR.,Primary Examiner.

R. S. STROBEL, VAN C. WILKS,

Assistant Examiners.

1. IN A WINDSHIELD CLEARING DEVICE COMPRISING IN COMBINATION MEANSCONNECTED INTO A MANIFOLD FOR PASSING HEATED EXHAUST GASES THERETHROUGH,A LOUVERED HOUSING SURROUNDING THE MAJOR PORTION OF SAID MEANS, PIPINGCONNECTED WITH SAID HOUSING EXTENDING TO A PLURALITY OF OUTLETS AT THEBASE OF A WINDSHIELD, FAN MEANS FOR MOVING AIR THROUGH SAID HOUSING ANDPAST SAID FIRST NAMED MEANS WHEREBY THE TEMPERATURE OF SAID AIR ISRAISED, SAID FAN MEANS FORCING SAID HEATED AIR THROUGH SAID OUTLETS ONTOTHE WINDSHIELD, FLEXIBLE TUBE MEANS CONNECTED WITH A WINDSHIELD WASHERBOTTLE, SAID TUBE MEANS EXTENDING INTO SAID PIPING AND PASSING WITHINSAID PIPING TO SPRAY NOZZLES PROJECTING FROM SAID OUTLETS OF SAIDPIPING, AND MEANS FOR FORCING FLUID THROUGH SAID FLEXIBLE TUBE MEANS ANDSPRAYING FROM SAID NOZZLES ONTO THE WINDSHIELD SURFACE WHEREBY SAIDWINDSHIELD CAN BE KEPT CLEAR OF SNOW, ICE AND OTHER OBSTRUCTIONS TOVISION.